package thread;


import java.util.*;

/*
* 集合常用的API
* ArrayList,LinKedList,HashSet,HashMap
* */
public class SyncApiDemo2 {
    public static void main(String[] args) {

//        List<Integer> list = new ArrayList<>();
//        Collection<Integer> c = new LinkedList<>();
//        Collection<Integer> c = new HashSet<>();
        Collection<Integer> c = Collections.synchronizedCollection(new LinkedList<>());
        Thread t1 = new Thread(){
            public void run(){
                for(int i=0;i<1000;i++){
                    c.add(i);
                }
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                for(int i=1000;i<2000;i++){
                    c.add(i);
                }
            }
        };
        t1.start();
        t2.start();
        try {
            Thread.sleep(50);
        } catch (InterruptedException e) {
        }

        System.out.println(c.size());


    }
}
